Force-feed lubricator.



EATENTEE JULY 14, 1908.

- c. E. EoDGEs.

EQEGE EEED EUEEIGATOE.

APPLICATION EILED EEE.11. 1907. A

a sHEETs-EHEET 1.

A Irv/EMM @Varen/ce1 f5. Hodge.'

, yPATENT'JfJD JULY 14', 1903.

' c. B. HQDGES. FORGE FEED LUBRIGATOR.

APPLICATION FILED FEB.11,-19Q'7.

3 SHEETS-SHEET 2.

UNTTED sTATns PATENT ersten.

(llltlNtll B. IIODGES, OI" DETROIT, MICHIGAN, ASSIGNOR TO DETROIT LUBRIGATOR .(JOMPANY, DETROIT, llIICI-IIGAN, A CORPORATION OF MILLIIGAN.'

FORCE-FEED LUBRICATOR.

Specification of Letters Patent.

Patented .my 14,' 190s.

Application filed February 11, 1907. Serial No. 356,904.

To all lUzom it tag/concern:

#Be it. known that I, (.TLARENCE B. HoDGEs, a citizen ol the 'United States of-America, residing at Detroit, in the county of Wayne und State ot Michigan, have invented'certain new and useful Improvements in Force-Feed Iniluicators, of u Inch the following 1s a s ecis P lication, reference being had therein to the accompanying drawings.

The invention relates to new and useful improven'icnts infl'orce feed lubricators, and consists particularly in the construction of a lubricator having aforce feed or pump which takes the oil from the reservoir and' delivers itthrough a bleeder or sight-feed, returning to the reservoir, and either the same pump or another one which takes a similar quantity of oil from the reservoir and delivers it to the point. to be lubricated, all as more fully hereinafter described and Iparticularly-pointed out in the claims.

Aln the drawings, Figure l is a'vertical section through a reservoir containing two airs olE pumps, one of which is in section ang one in elevation, and embodying my invention;

Fig. 2 is a `vertical section through one of the pumps and the reservoir shown in Fig. I;

Fig. -3 is a' horizontal section on line 3*-3 ofI Fig. 2; Figjll is a vertical s ection through the lower end of the valve casing, pump and connections, showing the construction of the pump which takes the oil from the reservoir and delivers it to the )art to be lubricated; Fig. ,5 is a section simi ar to Fig. 1, showing a modified form of the pump, with suitable valves, which in one reeiproeation delivers the oil through a blceder hack to the reservoir, and in the next reciproration takesn the oil from the reservoir and U delivers it to the point to be lubricated; Fig.

(i is a horizontal section online 6-6 of Fig. 5,'

Fig. r is a vertical section online 7-7 of Fig.

Y Fig. H is a section on line SZW-8 of Fig. 6.

A indicates a reservoir, in which in this 'ease l have located. the pump and the pump ingapparatus. v

' and B indicate two cylinders within the pump, and l. have shown these cylindersas cast integral with the valve easing C, lnwhich is a rotary shaft, D, which acts as a valve by 1 means ol' the ports o therein. The valve shaft l) has on Iits end the worm wheel E, which engages. with a worm F driven from any suitable source of power, On the oppo-V site end portions of the shaft D are cam be rotated therein.

or sight feed and et the reservoir.

.which at the vtop are connected .by the cross head I. y l

.J J indicate two pistons connected tgether in pairs by the connecting bar KL. .To

lthis connecting bar, and in the construction I have shown centrally thereof, is connected' the adjusting stem vL, one for each pairof pump pistons. These 'stems` are connected to the cross bar in such a way that they may These stems are provided With a screw-threaded' portion c, and preferably extend through the top ofthe caslng. Thisv screw threaded portion 'engages a nut d wit-hin said cross bar or horizontal portion, there being preferably a flange e to prevent the nut from rotating Whenthe adjusting stem is turned. Below the crossbar the adjusting stem is provided with a pin, sto or shoulder it, the construction being sucii that by rotating the stem L the distance be'- tween pin, shoulder or stop h and the nut Z will be varied, and consequently the throw or movement of the pistons J J( will be correspondingly varied.4 It is obvious from this descri tion that adjustment of a single stem L wil correspondingly adjust the tirow or travel-of both'of the pair of pistons, and therefore that each piston when adjusted will pum J the same amount of oil.

One oi the pumps (in this case I have shown it as the pump J) has the inlet conduit M and the discharge conduit M', the discharge conduit leading inI this case through the top -ol' the casing of the reservoir and having a discharge nozzle i, which discharges back through a nipple /r in the top ot' the tank or reservoir. I may let this noz/zio simply discharge through the air without any inclosing sight-feed glass, in which case it is commonly called the bleeth or I may surround i-t with a sight-feed l, so as to prevent the oil from getting on the exterior The other um of each pair has an inlet induction cont uit \I, and an `outlet pipe N', which leads to the point to be lubricated. The rotary valve, with ts ports a, is constructed and rotated so that each pump' will be respectivelyconnected with the inlet and discharge at the proper time, withdrawing the oil and discharging it at each revolution. It will be' seen that with this Gti construction, 'each pair of pumps being adjusted to give a uniform feed er travel, one pump will discharge a quantity of oil from the reservoir and back thereto and through its bleed or sight-feed, thus advising the operator, u on ins ectionof the amount of oil being fe at eac reeiprocation; while the other pum., pumping a similar quantity will draw tlie cated. It is obvious, of course, that there is a separate adjustment for each. pump, such as J2. t

With the construction shown in Figs. 5, 6, 7 and 8 I have shown this same result obtained vbya slightly modified form of ap aratus,M

` the construction shown in Figs. l, 2, 3 and 4,

excepting that the plumps are not connected up in pairs, but eac pump has its own independent .adjustment between it and the erosshead. The valve shaft or rotary valve is provided with two ports or notches m and m', arranged side by side and both communicating with a single cylinder. The port m is adaptedto connect the ump with the inlet port P leadin to the ottom of the reservoir andwitht e outlet port P', which leads to the sight-feed nozzle or bleed t', While thel port m is adapted to connect the inlet conduit Q with the dischar e conduit Q which leads to the point to be ubricated. With this construction one reci rocation of the piston will draw oil from t e reservoir and discharge it through thev sight-feed or bleed back into the reservoir; while the next reci rocation of the same piston will draw oilv t rough the inlet conduit Q and disehargeit through the discharge pipe Q to the oint to be lubricated. As thus constructed 1t is obvious that with a single pump I aecomplish the same result as accomplished with the two pumps of the construction shown in Figs. 1, 2, 3 and 4, and yet for each revolution of the valve shaft in both eases vI obtain a discharge of the desired quantity of oil to the point to be lubricated, and also a discharge through the bleed or sight i feed back to the reservoir of the same quanoil from the reservoir and disif charge 1t directly to the point to be lubfi# ytity of oil, so that the operator may be assured how much oil is being delivered for lubrication.

What I claim is,-

1. The combination with a reservoir of a pumping device, two inlet and two discharge conduits therefrom, one discharge conduit leading te a sight feed or bleed and back to the reservoir, the other discharge leading to the point to be lubricated, and a single regulating device for regulating the amount pumped through both discharge conduits.

2. lhe combination with an oil reservoir, of a pumping device for delivering oil therefrom and feeding it back to the reservoir, and for taking oil from the reservoir and delivering it to the point to be lubricated, an adusting vdevice for simultaneously regulating the amount of oil pumped througlrboth discharge conduits, and a sight feed or inspection means in the connection between the pumping device and the reservoir.

3. In a force feed lubricator, the combination of a reservoir, tiro pumps having connected pistons, a single means for adjusting the travel of both pistons, a discharge conduit from one pump leading therefrom and discharging back into the reservoir, a sight' feedv or bleed therein, and a discharge conduit from the other pump leading to the point to be lubricated.

In testimony whereof I affix my signature in presence of two witnesses.

CLARENCE B. HODGES.

Witnesses:v

J. P. TIERNAN, E. G. MA'r'runN. 

